Merge pull request #986 from duke-libraries/hotfix-983-batch-failure-handling

improve handling of batches with validation failures; closes #983
Applied patch from https://github.com/projectblacklight/blacklight/commit/5b7d1ce2e520de577cd2a7b1dab44a9d68c24490
Bumped version to 2.0.3
Fixes #981
Merge branch 'hotfix-2.0.3' into develop